Fair Value of Financial Instruments - Financial assets and liabilities accounted for at fair value on a recurring basis by level within the fair value hierarchy (Details) - Fair value measurement on recurring basis - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	$ 0.0	$ 0.0
Total non-current assets at fair value	0.0	0.0
Total current liabilities at fair value	0.0	0.0
Total non-current liabilities at fair value	0.0	0.0
Level 1 | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	$ 0.0	0.0
Total current liabilities at fair value		0.0
Level 1 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		0.0
Total non-current liabilities at fair value		0.0
Level 1 | Interest rate swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		0.0
Level 1 | Interest rate swap contracts: Float-to-fixed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total non-current assets at fair value		0.0
Total current liabilities at fair value
Total non-current liabilities at fair value		0.0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	$ 0.3	2.1
Total non-current assets at fair value	0.0	0.8
Total current liabilities at fair value	6.7	11.2
Total non-current liabilities at fair value	1.1	4.7
Level 2 | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	0.3	2.1
Total current liabilities at fair value	1.2	7.9
Level 2 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value	3.8	1.0
Total non-current liabilities at fair value	$ 0.5	0.4
Level 2 | Interest rate swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		2.3
Level 2 | Interest rate swap contracts: Float-to-fixed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total non-current assets at fair value		0.8
Total current liabilities at fair value	$ 1.7
Total non-current liabilities at fair value	0.6	4.3
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	0.0	0.0
Total non-current assets at fair value	0.0	0.0
Total current liabilities at fair value	0.0	0.0
Total non-current liabilities at fair value	0.0	0.0
Level 3 | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	$ 0.0	0.0
Total current liabilities at fair value		0.0
Level 3 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		0.0
Total non-current liabilities at fair value		0.0
Level 3 | Interest rate swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		0.0
Level 3 | Interest rate swap contracts: Float-to-fixed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total non-current assets at fair value		0.0
Total current liabilities at fair value
Total non-current liabilities at fair value		0.0
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	$ 0.3	2.1
Total non-current assets at fair value	0.0	0.8
Total current liabilities at fair value	6.7	11.2
Total non-current liabilities at fair value	1.1	4.7
Estimate of Fair Value Measurement | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current assets at fair value	0.3	2.1
Total current liabilities at fair value	1.2	7.9
Estimate of Fair Value Measurement | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value	3.8	1.0
Total non-current liabilities at fair value	0.5	0.4
Estimate of Fair Value Measurement | Interest rate swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total current liabilities at fair value		2.3
Estimate of Fair Value Measurement | Interest rate swap contracts: Float-to-fixed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total non-current assets at fair value	0.0	0.8
Total current liabilities at fair value	1.7
Total non-current liabilities at fair value	$ 0.6	$ 4.3